I have 11 various chix, mostly bantams, 4 roos. I had 3 silkies that I was trying to introduce to them. I had them in a rabbit cage in the coop and would let them out when I was there to supervise. The roos were picking on them, one roo in particular. So I had been putting him in the rabbit cage when I let them out. They had been doing fine. I let them out Saturday and went back to check on them about 2 hours later and found one of my silkies dead in the run. I feel terrible, but I am wondering if you all think something else could have happened to her because I could not find any wounds on her. She seemed fine when I last saw her. I guess my remaining silkies are going to need a coop of their own. I am too scared to try to let them out again.